Roller-mill



3 Sheets-Sheet 1. J. M. PINUH.

(No Model.)

ROLLER MILL.

Patented Mar. 10,1885.

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3 H O N I h M o Model.)

ROLLER MILL.

No. 313,816. Patented Mar. 10,1885.

(No Model.) 3 Shets-8heet J. M. FINGH.

RQLLER MILL.

No. 313,816. Ptented Mar. 10, 1885.

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JOHN M. FINOH, OF JACKSON, MICHIGAN.

ROLLER-MILL.

SPECIFICAI'IQN forming part of Letters Patent No. 313,816, dated Irlarch 10, 1885.

Application filed May 5, 1884. (X0 model.)

To all whom it may concern.-

Be it known that I, JOHN M. FINOH, a citizen of the United States,residing at J acksou, in the county of Jackson and State of Michigan,have invented certain new and useful Improvements in Roller-Mills; and Ido hereby declare the following to be afull, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to roller-mills such as are used for grindingwheat and other grains, middlings, and all the products of newprocessmilling.

My invention consists in improved means for adjusting a movable roll toand from a stationary roll, for simultaneously separating both of themovable rolls from-the stationary rolls, for leveling the rolls, and forrendering the bearings of the rolls self-adjusting, more particularly ashereinafter described and claimed.

My improvements are illustrated in the accompanying drawings, in whichFigure l is a plan view; Figs. 2, 3, 4, and 5, sectional views on linesA, B, O, and D, respectively, of Fig. 1; Fig. 6, a plan view of theframe supporting the rolls; and Figs. 7, 8, 9, 10, 11, and 12, views ofseparate parts of the machine.

In the drawings, A is the frame for supportng the rolls, plan views ofwhich are shown iu Figs. 1 and 6. The rolls are arranged on this framein pairs, a a b b, a I) being stationary and a b the adjustable rolls,and are supported in bearings l and 1. These bearings below thejournal-rests and at right angles therewith are bored out for thepurpose of receiving sleeves 2, which are provided with a head, 9, and alug, 8, having a pin-hole, a. \Vhen the sleeve is inserted in thebearings, the lug s is passed through a slot in the bottom of thebearings 1 and secured and pivoted to the frame by means of a bolt, h,passing through upwardly-projecting lugs, d, on the frame A, asindicated in Fig.'l1. Fig. 8 is a detached view of this sleeve. Thebearings 1 of the stationary rolls a b of the respective pairs of rollsrest against the heads '1 of these sleeves, as shown. The movable rollsa I), having the bearings 1, may be separately a justed to and from thestationary rolls by sliding their bearings on the sleeves 2'by meansabout to be described. W'h en necessary to be moved, the stationaryrolls a b can also be slid upon the sleeves 2.

F is a rod bentatone end, the opposite portion being reduced in size,forming a shoulder at z, and at this end screw-threaded to receive anut, g. This rod is placed in sleeve 2, its bent end engaged withslotted bar U, (the functions of which will be hereinafter fullydescribed,) and its opposite smaller end extending through the hub 3 ofa hand-wheel, 4. The inner ends of the hubs of these wheels are providedwith a screw-thread, t, which engages with the journal-bearings 1 of therolls b, which bearings are internally threaded to receive said hubs.Within the hub ofthis wheel is placed a coiled spring, 5, one end ofwhich bears against the inner end of the hub, and the opposite endagainst the nut g.

When it is desired to set either of the rolls a b nearer to either ofthe stationary rolls a or b, hand-wheel 4 is turned to the left,unscrewiu g the hub,which movement compresses the spring against the nutg, and the reactionary force of the spring carries the journalbearing lof the roll 1) forward the desired distance.

For simultaneously separating both of the movable rolls a b from thestationary rolls a b when it is desired to stop the machine, or to setsaid rolls at an equal distance from the stationary rolls at any time,the following means are employed: U, a bar, (shown in Fig. 7 with itsends terminating in broad heads, and having formed in each of said headstwo inclined slots, 12 1/, the slots in the respective heads diverging,so as to form a wedgeshaped part of the bar between them, is placedacross the machine between the stationary rolls a Z). The bar U isprovided on its under surface with a rack, 7, as shown in Fig. 2, withwhich engages a pinion, '1, on a shaft, 8, running at right angles withthe bar U, and supported in suitable bearings in the frame. The shaft 8is provided at each end with a crank, Z, which has a suitable handle,and the cranks are each provided with a slot, W. Into the slots 1; ofthe bar Uare placed the bent ends of the rods F. By means of the cranksZ the shaftSmay be rotated and the bar U reeiprocat-ed. 'By

moving the bar U in one direction the wedgeshaped portion of the barbetween the slots is forced farther between the bent ends of rods F,thus carrying the said rods backward. The rods F having shoulders at 13,against which the hubs t of wheels 4 abut, and said hubs being screwedinto the bearings l of a movable roll,

as before described, this backward action of the rod F serves also tocarry back the bearings of the movable roll on the sleeve 2. Theoriginal position of the rolls and their point of closest contact, asshown in Fig. 1, is obtained by the rotation of shaft 8 in an oppositedirectian until the stops W on cranks Z rest upon the roller-frame.

For the purpose of leveling the rolls or setting their surfaces in thesame horizontal plane, I have devised the following means: J is a hollowbolt with its outer surface threaded, which is passed up through athreaded opening in the frame at 9, Fig. 5, and through a trans verseslot, 10, in the bottom of bearing 1, with its upper end resting in aseat, ll, formed in the under surface of the hollow bar 2, as shown inFigs. 4 and 5. The size and length of slot 10, through which the bolt Jis passed, are sufficient to permit the free endwise movement of thebearing 1 of the movable roll upon the sleeve 2, as above described. Abolt, J, passes through the bolt J,,and is provided with a head, whichis countersunk intbe sleeve 2. The end of the movable roll a or I) isadjusted vertically up or down 'by turning bolt J as thebearing 1 iscarried by sleeve 2, and sleeve 2 is pivoted by bolt h to the frame, asalready described. \Vhen the roll is adjusted to the position required,it may be rigidly secured in place by turning up nut j on outer end ofbolt J, which forces the seat 11 in the sleeve 2 down upon the upper endot'bolt J.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

1. In a roller-mill, in combination with the rolls and their bearings,the sleeves placed within said bearings, rods within said sleeves, thehand'wheels, and the springs within said wheels, whereby a movable rollis adjusted to and from a stationary roll, substantially as described.

2. In a roller-mill, the slotted bar, in combination with a rack,pinion, and shaft, the reds connected with said slotted bar, thebearings of the rolls, and sleeves for said bearings to slide upon,whereby the movable rolls of separate pairs are adjusted to and from thestationary rolls, substantially as described.

3. In a roller-mill, the combination of the roll-bearings, the sleevesextending through said bearings, and the adjusting-screws,whereby herolls are leveled, substantially as described.

4. Inaroller-niill, the movable rolls, in bombination with the sleeveson which they slide, the rods within said sleeves, the springs, and thewheels containing said springs, whereby the said rolls are renderedself-adjusting, substantially as described.

5. In a roller-mill, the frame A. adapted to support in pairs the rollsa a b b,-in combination with the hearings or" said rolls, and thesleeves 2, pivoted to said frames, substantially as described.

6. In a roller-mill, the combination of the movable rolls and bearings,the slotted bar U, the means for reci1 n'ocating said bar, consisting ofthe rack, pinion, and shaft, and rods which at one end engage with saidbar, and at their opposite ends are connected with the bearings of saidrolls, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN M. FINCH.

I'Vitnesses:

N. G. Lown, S. B. RIOKERSON.

